膨化全脂大豆对仔猪生产性能和养分消化率的影响

根据遗传、性别、体重等相一致的原则,将30头35日龄断奶的杜洛克仔猪随机分为3个组,每组设2个重复,研究膨化全脂大豆对仔猪生产性能和饲粮养分消化率的影响。对照组以玉米豆粕等配制饲粮,试验1组以膨化全脂大豆替代50%的豆粕,试验2组以膨化全脂大豆替代全部豆粕,其他饲粮组成保持不变,进行40 d的饲养试验。在试验第20 d开始,连续收集粪便3 d,测定饲粮养分消化率。结果表明,试验1组日增重比对照组提高了17.6%,差异显著(P<0.05),试验2组比对照组提高了7.4%(P>0.05);试验1组和试验2组饲料利用率分别比对照组提高11.7%和7.6%。试验2组干物质消化率显著高于对照组(P<0.05),蛋白质的消化率三个组基本接近,但含有膨化大豆的试验1组和试验2组的粗脂肪和粗灰分的消化率均比对照组有提高趋势。

Effect of Extruded Full-fat Soybean on Growth Performance of Weanling Pigs and Nutrient Digestibility of Diet

Thirty Duroc pigs weaned at 35 days were randomly assigned to one of the three treatments according to the same heredity,sex and weight.Each treatment represented by two replicates of 5 pigs.The control diet was based on corn-soybean meal.In treatment 1 and 2,extruded full-fat soybean were used to replace 50 and 100% of soybean meal respectively.The trial lasted for 40 days.After 20 days,the feces were consecutively colleted for three days to determine the nutrient digestibility of diets.The average daily gain of pigs in treatment 1 was 17.6% higher,compared to the control(P<0.05).The weight gain of pigs in treatment 2 was increased by 7.4%(P>0.05).Feed conversation ratios in treatment 1 and 2 were 11.7 or 7.6% better than that in the control.Dry matter digestibility in treatment 2 was significantly higher than that of the control.The protein digestibility was not different between three treatments.